using System;

namespace Example12
{

	public class Point
	{
		private double x, y;

		public Point(double x, double y)
		{
			this.x = x;
			this.y = y;
		}

		public double X
		{
			get { return x; }
			set { x = value; }
		}

		public double Y
		{
			get { return y; }
			set { y = value; }
		}
	}
	/// <summary>
	/// Summary description for Class1.
	/// </summary>
	class Class1
	{
		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main(string[] args)
		{
			Point a = new Point(1.7, 2.3);
			Point b = new Point(5.6, 4.2);
			Console.WriteLine("a.x=" + a.X + " a.y=" + a.Y);
			Console.WriteLine("b.y=" + b.Y + " b.x=" + b.X);
			//b = new Point(9.3,4.2);
			b.X = 9.3;
			Console.WriteLine("b.y=" + b.Y + " b.x=" + b.X);
		}
	}
}